A004980 - OEIS

A004980

Numbers k such that if 1 <= j < k then the fractional part of the k-th partial sum of the harmonic series > the fractional part of the j-th partial sum of the harmonic series.

2, 3, 10, 29, 30, 225, 226, 4549, 91379, 248395, 248396, 675212, 675213, 4989190, 13562026, 36865410, 36865411, 100210578, 100210579, 100210580, 5471312309, 14872568829, 14872568830, 40427833594, 40427833595, 109894245427, 109894245428, 812014744421

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..28.

PROG

(PARI) lista(nn) = {fr = 0; h = 1; for (n = 2, nn, h += 1/n; if ((nfr = frac(h)) > fr, print1(n, ", "); fr = nfr; ); ); } \\ Michel Marcus, Sep 30 2013

CROSSREFS

Sequence in context: A037169 A058953 A160909 * A034324 A084380 A363139

Adjacent sequences: A004977 A004978 A004979 * A004981 A004982 A004983

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

a(9) from Michel Marcus, Sep 30 2013

More terms from Jon E. Schoenfield, Dec 23 2013

STATUS

approved